CN108675076A - Door lock short-circuit detecting device - Google Patents
Door lock short-circuit detecting device Download PDFInfo
- Publication number
- CN108675076A CN108675076A CN201810803680.9A CN201810803680A CN108675076A CN 108675076 A CN108675076 A CN 108675076A CN 201810803680 A CN201810803680 A CN 201810803680A CN 108675076 A CN108675076 A CN 108675076A
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- Prior art keywords
- short
- circuit
- door lock
- circuit detecting
- normally opened
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The present embodiments relate to elevator control technology fields, disclose a kind of door lock short-circuit detecting device.The device includes:Detection unit and multiple safety relays;Wherein, each safety relay all has a normally opened contact and a normally-closed contact;Door lock circuit includes:M short-circuit detecting portion, M are the even number more than 2;M short-circuit detecting portion is connect after being connected in series with detection unit, and the test point being connect with detection unit is all had between two neighboring short-circuit detecting portion in door lock circuit;Each test point in one end and door lock circuit of each normally opened contact of multiple safety relays connects one to one;Detection unit is used to detect the independent short circuit and bridging short circuit in M short-circuit detecting portion by multiple safety relays;Each normally-closed contact of multiple safety relays is connect after being connected in series with brake apparatus.The case where can detecting the independent short circuit of all door locks using the present invention and bridge short circuit and the specific contact being shorted, and it is safe, simple in structure, at low cost.
Description
Technical field
The present embodiments relate to elevator control technology field, more particularly to a kind of door lock short-circuit detecting device.
Background technology
When maintenance lift, short circuit loop of the door lock is inevitable, but after having repaired, and maintenance personal forgets to remove short
Wiring does not restore the normal connection status of loop of the door lock, it is possible to cause casualties, therefore, the detection of door lock short circuit is to ensure
The important measures of elevator safety operation, and national regulations:Elevator should have door circuit detection function, when car is in unlocking area
In domain, gate is opened and when layer door lock discharges, monitoring checks electric safety device, the inspection layer door door of gate closed position
Lock the correct action of the electric safety device and gate monitoring signal of locked position;If monitoring the failure in above-mentioned apparatus,
It can prevent the abnormal running of elevator.
Inventor has found that at least there are the following problems in the prior art:Existing door lock short-circuit detecting device can not detect
The case where all door lock bridging short circuits, and the specific contact of bridging short circuit can not be detected, while cost is higher.
Invention content
Embodiment of the present invention is designed to provide a kind of door lock short-circuit detecting device, can detect all door locks across
The case where connecing short circuit and the specific contact being shorted, and it is safe, simple in structure, at low cost.
In order to solve the above technical problems, embodiments of the present invention provide a kind of door lock short-circuit detecting device, including:Inspection
Survey unit and multiple safety relays;Wherein, each safety relay all has a normally opened contact and one normally closed touches
Point;The door lock circuit includes:M short-circuit detecting portion, M are the even number more than 2;After M short-circuit detecting portion is connected in series with
It is connect with the detection unit, all has between two neighboring short-circuit detecting portion in the door lock circuit and connect with the detection unit
The test point connect;One end of each normally opened contact of the multiple safety relay and each test point in the door lock circuit are one by one
It is correspondingly connected with;The detection unit is used to detect the independent short of M short-circuit detecting portion by the multiple safety relay
Connect and bridge short circuit;Each normally-closed contact of the multiple safety relay is connect after being connected in series with brake apparatus.
Embodiment of the present invention in terms of existing technologies, due between two neighboring short-circuit detecting portion in door lock circuit
The test point being connect with detection unit is all had, and each test point corresponds with the normally opened contact of each safety relay connect respectively
It connects, in this way, the break-make of the normally opened contact by controlling each safety relay, you can pass through each safety relay and each test point
It forms the independent short circuit in each short-circuit detecting portion and bridges the detection circuit of short circuit, to be examined to each short circuit in door lock circuit
The independent short circuit and bridging short circuit situation in survey portion are detected, and are capable of detecting when the specific contact being shorted;And due to
The normally-closed contact of each safety relay is connect after being connected in series with brake apparatus, therefore, in any one safety relay
When normally opened contact is closed, brake apparatus is braked, to ensure that elevator is in a safe condition when carrying out door lock short-circuit detecting;This
The case where independent short circuit of door lock circuit and bridging short circuit can be realized by several safety relays in embodiment, structure letter
It is single, safe and reliable, at low cost.
In addition, the other end of each normally opened contact of the multiple safety relay is directly connected to trigger source, so as to
Break-make by individually controlling the normally opened contact of each safety relay is realized individually or bridging short circuit detects, and detection mode is more
Simply.
In addition, the normally opened contact of the multiple safety relay is connect after being connected in series with trigger source, it is another to provide
A kind of detection mode.
In addition, the trigger source is safety return circuit or independent external trigger source in elevator, it is a variety of to provide
Realization method.
In addition, the detection unit is electric life controller, each safety relay includes relay coil, it is described after
Electric apparatus coil is all connected with the electric life controller.
It is multi-door to applicable two-door, three and four etc. in addition, the M is any one in 4,6 or 8
Scene.
Description of the drawings
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element with same reference numbers label is expressed as similar element in attached drawing, removes
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the structural schematic diagram according to first embodiment of the invention door lock short-circuit detecting device;
Fig. 2 is the structural schematic diagram according to first embodiment of the invention hall door short-circuit detecting portion;
Fig. 3 is the simplified structure diagram according to first embodiment of the invention door lock short-circuit detecting device;
Fig. 4 is the detects schematic diagram according to first embodiment of the invention M1 short circuits;
Fig. 5 is the detects schematic diagram according to first embodiment of the invention M2 short circuits;
Fig. 6 is the detects schematic diagram according to first embodiment of the invention M3 short circuits;
Fig. 7 is the detects schematic diagram according to first embodiment of the invention M4 short circuits;
Fig. 8 is the detects schematic diagram according to the bridging short circuit of first embodiment of the invention M1, M2;
Fig. 9 is the detects schematic diagram according to first embodiment of the invention M1~M3 bridging short circuits;
Figure 10 is the detects schematic diagram according to first embodiment of the invention M1~M4 bridging short circuits;
Figure 11 is the detects schematic diagram according to the bridging short circuit of first embodiment of the invention M2, M3;
Figure 12 is the detects schematic diagram according to first embodiment of the invention M2~M4 bridging short circuits;
Figure 13 is the detects schematic diagram according to the bridging short circuit of first embodiment of the invention M3, M4;
Figure 14 is the structural schematic diagram according to second embodiment of the invention door lock short-circuit detecting device.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, it can also realize the application technical solution claimed.
The first embodiment of the present invention is related to a kind of door lock short-circuit detecting devices.The door lock short-circuit detecting of present embodiment
Device includes:Detection unit and multiple safety relays;Wherein, each safety relay all has a normally opened contact and one
Normally-closed contact;Door lock circuit includes:M short-circuit detecting portion, M are the even number more than 2;M short-circuit detecting portion be connected in series with after with
Detection unit connects, and the test point being connect with detection unit is all had between two neighboring short-circuit detecting portion in door lock circuit;It is more
Each test point in one end and door lock circuit of each normally opened contact of a safety relay connects one to one;Detection unit is used for
The independent short circuit and bridging short circuit in M short-circuit detecting portion are detected by multiple safety relays;Multiple safety relays it is each
Normally-closed contact is connect after being connected in series with brake apparatus.Present embodiment in terms of existing technologies, due in door lock circuit
All have the test point being connect with detection unit between two neighboring short-circuit detecting portion, and each test point respectively with each safety relay
The normally opened contact of device connects one to one, in this way, the break-make of the normally opened contact by controlling each safety relay, you can by each
Safety relay and each test point form the independent short circuit in each short-circuit detecting portion and bridge the detection circuit of short circuit, to right
The independent short circuit and bridging short circuit situation in each short-circuit detecting portion in door lock circuit are detected;And due to each safety
The normally-closed contact of relay is connect after being connected in series with brake apparatus, therefore, in the normally opened contact of any one safety relay
When closure, brake apparatus is braked, to ensure that elevator is in a safe condition when carrying out door lock short-circuit detecting;Present embodiment
The case where independent short circuit of door lock circuit and bridging short circuit can be realized by several safety relays, simple in structure, safety can
It leans on, is at low cost.
The realization details of the door lock short-circuit detecting device of present embodiment is specifically described below, the following contents is only
For convenience of the realization details provided is understood, not implement the necessary of this programme.
Referring to Fig. 1, present embodiment illustrates for applied to two-door door lock of elevator short-circuit detecting device, so
Without being limited thereto, present embodiment is equally applicable to three and four door lock of elevator short-circuit detectings, the short circuit inspection in door lock circuit
The quantity in survey portion is generally 2 times of car door number.Specifically, two-door door lock circuit include 4 independent short-circuit detecting portions, three
The door lock circuit of door includes 6 independent short-circuit detecting portions, and four door lock circuits include 8 independent short-circuit detecting portions.This
In embodiment, M1~M4 expressions are respectively adopted in 4 independent short-circuit detecting portions, be respectively the lobby of car, preceding sedan-chair, after
The Room, rear sedan-chair short-circuit detecting portion.Wherein, the short-circuit detecting portion of the gate of preceding sedan-chair and rear sedan-chair is respectively 1 contact, please refers to figure
2, the short-circuit detecting portion of the hall door of lobby and opisthodome is generally sequentially connected in series by N number of layer of door lock contact, wherein N's takes
Value is identical as the floor number of elevator.The structure of door lock circuit can be various door lock circuit structures in the prior art, herein
It repeats no more, present embodiment is not specifically limited door lock circuit.Wherein, cage door lock contact and layer door lock contact
Be normally-closed contact, i.e., when elevator normally walks ladder, cage door lock contact is closed, and each layer door lock contact is closed, when
When elevator two-door is opened, 2 layer door lock contacts of 2 cage door lock contacts and place floor disconnect.4 short circuits
Test section is connected in series with, and the serial connection sequence in short-circuit detecting portion of lobby, preceding sedan-chair, opisthodome, rear sedan-chair is not restricted.Each short circuit inspection
Survey portion corresponds to a test point respectively, and 4 short-circuit detecting portions are total 4 test points, and the head end (such as M1) of door lock circuit
Also connecting detection unit.Therefore, 5 test points are shared in door lock circuit to connect with detection unit, referring to Fig. 1,5 test points
Be respectively adopted 1.~5. indicate.Detection unit is, for example, electric life controller, so without being limited thereto.Electric life controller includes multiple detections
Foot is X0~X4 respectively, wherein test point 1.~5. with detection foot X0~X4 connect one to one.
In present embodiment, one end of the normally opened contact of each safety relay respectively with it is adjacent two-by-two in door lock circuit
Test point between short-circuit detecting portion connects one to one, and is then then connected to electric life controller, wherein two two-phase in M1~M4
3 test points are shared between adjacent short-circuit detecting portion 2., 3., 4., and correspondingly the quantity of safety relay can be 3.Specifically
3 safety relays on ground, present embodiment are respectively K1, K2 and K3, wherein K1A, K2A and K3A indicate relay respectively
Device coil, 3 relay coils are all connected with electric life controller, for example, be respectively connected to 3 of electric life controller control foot Y0~
Y2.K1B, K2B and K3B indicate that the normally opened contact of 3 safety relays, K1C, K2C and K3C indicate 3 peaces respectively respectively
The normally-closed contact of all relay.It is so without being limited thereto.Referring to Fig. 3, can also include additional peace in door lock short-circuit detecting device
All relay, K4 and K5, normally-closed contact K4C, K5C of K4, K5 are concatenated with K1C, K2C and K3C, the normally opened contact K4B of K4
Second end can connect the second end of the 5th detection foot X4 and the 4th short-circuit detecting portion M4, the of the normally opened contact K5B of K5
Two ends can connect the first end of the first detection foot X0 and the first short-circuit detecting portion M1, and the first end of K4B and K5B are all connected with
Trigger source.In present embodiment, detection unit, multiple safety relays and door lock circuit are all connected with trigger source, trigger source example
Such as it is the safety return circuit in elevator, trigger source is for providing detection signal, for example, a high level.It is so without being limited thereto, it please join
Fig. 3 is read, trigger source can also be that detection signal is provided separately in each detection foot, i.e. trigger source can also be independent external trigger
Source, present embodiment are not particularly limited the realization method of trigger source.
It should be noted that short-circuit detecting portion M1~M4 is respectively required to 1 detection foot and external trigger source.For touching
For point detection, the structure diagram of door lock short-circuit detecting device can there are many deformations, for example, can front give trigger source, behind
Detection, can also below give trigger source, before detect;Trigger source can be given with single-point, can also combine to.
In present embodiment, trigger source, door lock circuit, 3 safety relays and electric life controller can be realized each
The independent short circuit in short-circuit detecting portion or the detection of bridging short circuit.Wherein, the first detection foot X0 connection trigger sources, the first short circuit inspection
The first end of survey portion M1 connects trigger source, the second detection foot of second end connection X1, the safety relay of the first short-circuit detecting portion M1
Normally opened contact K1B and the second short-circuit detecting portion M2 first end, the second short-circuit detecting portion M2 second end connection third inspection
Survey foot X2, safety relay normally opened contact K2B and third short-circuit detecting portion M3 first end, third short-circuit detecting portion M3's
Second end connects the first end of the 4th short-circuit detecting portion M4, the detection foot X3 of the normally opened contact K3B of safety relay and the 4th, the
The 5th detection foot X4 of second end connection of four short-circuit detecting portion M4, the second end of the 4th short-circuit detecting portion M4 also pass through K1C, K2C
And K3C connection brake apparatus.
Below to the detection mode of independent short circuit and bridging short circuit in the door lock short-circuit detecting device of present embodiment
It illustrates.
Referring to Fig. 4, can be by detecting that the first short-circuit detecting portion M1 is short with the circuit shown in the solid line of overstriking in Fig. 4
The normally opened contact of road, i.e. electric life controller control safety relay K1~K3 disconnect, and are passing through the second detection foot X1 detections
When to detection signal from trigger source (i.e. safety return circuit), judgement the first short-circuit detecting portion M1 short circuits, the second detection foot at this time
X1 can pass through the first short-circuit detecting portion M1 short-circuit detectings to detection signal.
Referring to Fig. 5, can be by detecting that the second short-circuit detecting portion M2 is short with the circuit shown in the solid line of overstriking in Fig. 5
The normally opened contact that road, i.e. electric life controller control safety relay K1 is closed, and the normally opened contact of K2 and K3 disconnect, and logical
Third detection foot X2 is crossed when detecting the detection signal from trigger source, judgement the second short-circuit detecting portion M2 short circuits, third at this time
Detecting foot X2 can be believed by the normally opened contact K1B and the second short-circuit detecting portion M2 conduction detections of safety relay K1 to detection
Number.
Referring to Fig. 6, can be by detecting that third short-circuit detecting portion M3 is short with the circuit shown in the solid line of overstriking in Fig. 6
The normally opened contact that road, i.e. electric life controller control safety relay K2 is closed, and the normally opened contact of K1 and K3 disconnect, and logical
The 4th detection foot X3 is crossed when detecting the detection signal from trigger source, the portion M3 short circuits of judgement third short-circuit detecting, at this time the 4th
Detecting foot X3 can be believed by the normally opened contact K2B and third short-circuit detecting portion M3 conduction detections of safety relay K2 to detection
Number.
Referring to Fig. 7, can be by detecting that the 4th short-circuit detecting portion M4 is short with the circuit shown in the solid line of overstriking in Fig. 7
The normally opened contact that road, i.e. electric life controller control safety relay K3 is closed, and the normally opened contact of K1 and K2 disconnect, and logical
The 5th detection foot X4 is crossed when detecting the detection signal from trigger source, judgement the 4th short-circuit detecting portion M4 short circuits, at this time the 5th
Detecting foot X4 can be believed by the normally opened contact K3B and the 4th short-circuit detecting portion M4 conduction detections of safety relay K3 to detection
Number.
Referring to Fig. 8, can be that is, electric by detecting M1, M2 bridging short circuit with the circuit shown in the solid line of overstriking in Fig. 8
The normally opened contact of terraced controller control safety relay K1~K3 disconnects, and is detected from tactile detecting foot X2 by third
When the detection signal to rise, judgement M1~M2 bridging short circuits, third, which detects foot X2, at this time can pass through M1~M2 bridging short circuit inspections
Measure detection signal.
Referring to Fig. 9, can be by detecting M1~M3 bridging short circuits with the circuit shown in the solid line of overstriking in Fig. 9, i.e.,
The normally opened contact of electric life controller control safety relay K1~K3 disconnects, and is come from being detected by the 4th detection foot X3
When the detection signal of trigger source, judgement M1~M3 bridgings are short-circuit, and the 4th detection foot X3 can pass through M1~M3 bridging short circuits at this time
Detect detection signal.
Referring to Fig. 10, can be short-circuit by detecting that M1~M4 is bridged with the circuit shown in the solid line of overstriking in Figure 10,
That is the normally opened contact of electric life controller control safety relay K1~K3 disconnects, and is come from being detected by the 5th detection foot X4
When the detection signal of trigger source, judgement M1~M4 bridgings are short-circuit, and the 5th detection foot X4 is only capable of bridging short circuit by M1~M4 at this time
Detect detection signal.
1 is please referred to Fig.1, it can be by detecting M2, M3 bridging short circuit with the circuit shown in the solid line of overstriking in Figure 11, i.e.,
The normally opened contact K1B that electric life controller controls safety relay K1 is closed, and the normally opened contact of K2 and K3 disconnect, and are passing through
When 4th detection foot X3 detects the detection signal from trigger source, judgement M2, M3 bridging short circuit the 4th detects foot X3 just at this time
Short-circuit detecting can be bridged by M2, M3 to detection signal.
2 are please referred to Fig.1, can be short-circuit by detecting that M2~M4 is bridged with the circuit shown in the solid line of overstriking in Figure 12,
That is the normally opened contact K1B of electric life controller control safety relay K1 is closed, and the normally opened contact of K2 and K3 disconnect, and logical
The 5th detection foot X4 is crossed when detecting the detection signal from trigger source, judgement M2~M4 bridging short circuits, the 5th detection foot at this time
X4 can bridge short-circuit detecting to detection signal by M2~M4.
3 are please referred to Fig.1, it can be by detecting M3, M4 bridging short circuit with the circuit shown in the solid line of overstriking in Figure 13, i.e.,
The normally opened contact K2B that electric life controller controls safety relay K2 is closed, and the normally opened contact of K1 and K3 disconnect, and are passing through
When 5th detection foot X4 detects the detection signal from trigger source, judgement M3, M4 bridging short circuit the 5th detects foot X4 just at this time
Short-circuit detecting can be bridged by M3, M4 to detection signal.
It should be noted that electric life controller can detect successively in the order described above M1~M4 it is independent short circuit and across
Short-circuit conditions are connect, the independent short circuit and bridging short circuit that certain electric life controller can also be according to any other sequence to M1~M4
Situation is detected.It is corresponding in K1C~K3C when electric life controller, which controls any normally opened contact in K1B~K3B, to be closed
Normally-closed contact disconnects, and brake apparatus is braked at this time, ensures elevator safety.Electric life controller can also pass through the second detection foot X1
Whether detection safety relay K1 there is normally opened adhesion, specifically, when normally opened the touching of electric life controller control safety relay K1
When point K1B is closed, if the normally opened contact K1B of safety relay K1 is still turned off, the second detection foot X1 cannot be detected
Signal is surveyed, can determine that normally opened adhesion fault occurs in K1 at this time.Similarly, the detection feet of foot X2 and the 4th X3 is detected also by third
Whether detectable K2, K3 there is normally opened adhesion fault.
Present embodiment compared with prior art, can detect the independent short circuit in each short-circuit detecting portion in door lock circuit with
And various bridging short-circuit conditions, and can distinguish bridging short circuit specific short-circuit detecting portion, to for overhauling elevator provide according to
According to elevator detection efficiency can be improved.Above-mentioned short-circuit function can be realized using a few safety relay in present embodiment
Detection, it is simple in structure, at low cost, and safety relay faults itself can be detected, while carrying out short-circuit detecting
When, as long as any normally opened contact of safety relay is closed, then the normally-closed contact of the safety relay disconnects, and brake apparatus is
Braking ensures elevator safety.
Second embodiment of the present invention is related to a kind of door lock short-circuit detecting device.Second embodiment and the first embodiment party
Formula is roughly the same, is in place of the main distinction:In the first embodiment, the other end of multiple safety relays is directly connected to
Trigger source.And in second embodiment of the invention, multiple safety relays are connect after being connected in series with trigger source, to abundant
The realization method of the present invention.
Please referring to Fig.1 4, in present embodiment, the first end of the normally opened contact K1B of safety relay K1 connects trigger source,
The second end of K1B connects the second end of the first short-circuit detecting portion M1, the second the normally opened of detection foot X1 and safety relay K2 touches
The first end of point K2B, the second end of K2B connect the second end of the second short-circuit detecting portion M2, third detection foot X2 and safety after
The first end of the normally opened contact K3B of electric appliance K3, the second end of the second end connection third short-circuit detecting portion M3 of K3B, the 4th detection
Foot X3.
It should be noted that present embodiment is that the door lock short-circuit detecting device equivalent with first embodiment therefore can
By according to short to the independent short circuit and bridging in each short-circuit detecting portion of door lock circuit in a manner of similar with first embodiment
Road situation is detected, and difference lies in control safety relay with first embodiment in control mode for present embodiment
When the normally opened contact K2B of device K2 is closed, it is also necessary to while the normally opened contact K1B for controlling safety relay K1 is closed;Pacify in control
When the normally opened contact K3B of all relay K3 is closed, it is also necessary to while controlling normally opened contact K1B, K2B of safety relay K1, K2
It is closed.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (6)
1. a kind of door lock short-circuit detecting device, which is characterized in that including:Detection unit and multiple safety relays;Wherein, often
A safety relay all has a normally opened contact and a normally-closed contact;
The door lock circuit includes:M short-circuit detecting portion, M are the even number more than 2;
M short-circuit detecting portion is connect after being connected in series with the detection unit, two neighboring short circuit in the door lock circuit
The test point being connect with the detection unit is all had between test section;
One end of each normally opened contact of the multiple safety relay is corresponded with each test point in the door lock circuit to be connected
It connects;
The detection unit be used for by the multiple safety relay detect M short-circuit detecting portion independent short circuit and
Bridge short circuit;
Each normally-closed contact of the multiple safety relay is connect after being connected in series with brake apparatus.
2. door lock short-circuit detecting device according to claim 1, which is characterized in that the multiple safety relay it is each often
The other end for opening contact is directly connected to trigger source.
3. door lock short-circuit detecting device according to claim 1, which is characterized in that the multiple safety relay it is normally opened
It is connect with trigger source after contact series connection.
4. door lock short-circuit detecting device according to claim 2 or 3, which is characterized in that the trigger source is in elevator
Safety return circuit or independent external trigger source.
5. door lock short-circuit detecting device according to claim 1, which is characterized in that the detection unit is elevator controlling
Device, each safety relay includes relay coil, and the relay coil is all connected with the electric life controller.
6. door lock short-circuit detecting device according to claim 1, which is characterized in that the M be 4,6 or 8 in it is arbitrary
One.
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Cited By (7)
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CN109444736A (en) * | 2018-12-29 | 2019-03-08 | 大唐观音岩水电开发有限公司 | The calibration equipment of new type of relay |
CN110759198A (en) * | 2019-09-30 | 2020-02-07 | 苏州汇川技术有限公司 | Elevator door lock switch short circuit detection method, system, equipment and storage medium |
CN111377323A (en) * | 2018-12-29 | 2020-07-07 | 蒂森克虏伯电梯(上海)有限公司 | Elevator safety device and elevator |
CN112061914A (en) * | 2019-06-10 | 2020-12-11 | 上海三菱电梯有限公司 | Elevator safety loop detection system |
CN113232694A (en) * | 2021-06-02 | 2021-08-10 | 中车青岛四方机车车辆股份有限公司 | Three-phase motor power supply system |
CN113247727A (en) * | 2021-04-15 | 2021-08-13 | 上海新时达电气股份有限公司 | Elevator door loop fault detection device and detection method thereof |
CN113247728A (en) * | 2021-05-10 | 2021-08-13 | 上海三菱电梯有限公司 | Elevator control detection circuit |
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CN113247727A (en) * | 2021-04-15 | 2021-08-13 | 上海新时达电气股份有限公司 | Elevator door loop fault detection device and detection method thereof |
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